Cov ntsiab cai thiab kev faib tawm ntawm ultrasonic transducer
Lub hauv paus ntsiab lus ntawm Ultrasonic Transducer
Lub tshuab hloov ultrasonic yog lub plawv ntawm lub tshuab ultrasonic welding, ib yam li lub cav ntawm lub tsheb. Cov ultrasonic transducer hloov cov hluav taws xob loj ntawm cov hluav taws xob los yog cov khoom siv hluav taws xob tso tawm los ntawm lub tshuab hluav taws xob ultrasonic rau hauv kev co tshuab hauv tib zaus. Muaj ob hom kev hloov ultrasonic. Ib qho yog magnetostrictive transducer, thiab lwm qhov yog piezoelectric tej hub hloov. Magnetostrictive transducers, vim kev ua haujlwm qis thiab qis tus nqi, yuav tsum muaj sab nraud DC polarization magnetic teb, yog li ultrasonic vuam tshuab tsis tshua tau siv tam sim no. Tam sim no, ultrasonic vuam tshuab siv piezoelectric ceramic transducers. Lub hauv paus ntsiab lus yog cov nyhuv piezoelectric ntawm cov ntaub ntawv siv lead ua. Cov khoom siv no yog cov khoom siv hluav taws xob piezoelectric. Thaum cov ntaub ntawv no deforms hauv qhov chaw paub tab, lub piezoelectric ceramic siv lead ua saum npoo Yuav muaj hluav taws xob tsub, thiab hluav taws xob teb yuav tsim tawm hauv cov iav ci. Ntawm qhov tsis sib thooj, thaum cov kua siv lead ua tau raug rau sab nrauv hluav taws xob, daim ntawv kub yuav deform. Qhov xwm txheej no yog hu ua cov nyhuv piezoelectric. Cov qub yog hu ua cov hauj lwm zoo los yog rov ua hauj lwm tam sim no.
Kev faib tawm ultrasonic transducer
Lub tshuab ultrasonic hloov pauv yog lub plawv ntawm lub tshuab vuam ultrasonic. Kev tsim qauv ntawm ultrasonic transducer yog ncaj qha rau kev ua tau zoo, kev ruaj khov thiab kev ua neej nyob ntawm lub tshuab welding. Feem ntau piezoelectric ceramic hloov khoom siv hauv kev ua lag luam yog ua los ntawm kev co Muaj ntau yam qauv, xws li radial kev co hom, longitudinal compound kev co hom, shear kev co hom, tuab kev co hom, thiab lwm yam. thaum vuam yas workpieces. Lub pwm sab saud thiab qis pwm ntawm lub workpiece yog melted nyob rau hauv kev co lub siab thiab kev sib txhuam, thiab tom qab ntawd welded nyob rau hauv siab kom ua tiav cov vuam nyhuv.
Piezoelectric ceramic transducer
1. Cov Qauv
Cov qauv ntawm piezoelectric ceramic transducer yog tsim ntawm piezoelectric ceramic wafers, cov kab ntawv electrode, daim npog sab pem hauv ntej thiab sab nraud, thiab lwm yam. Cov npog hauv ntej yog ua los ntawm lub teeb, siab-siab lub zog aluminium lossis titanium alloy. Nws siv qhov ntev ntawm cov nyhuv ntawm piezoelectric ceramics thiab cov kev coj ua polarization ntawm ceramic cheebtsam. Cov hluav taws xob hluav taws xob kev taw qhia thiab cov kev tswj lub tshuab hluav taws xob yog tib yam.
2. Qhov zoo
1. Feem ntau cov cheeb tsam ceramic muaj lub zog compressive ntau dua, uas yuav nce ntxiv thaum qhov hloov puag ncig lub zog, thiab kev ruaj ntseg ntawm tus hloov pauv yuav hloov. Qhov tsis zoo ntawm cov ntaub ntawv ceramic yog tias qhov kev tso cai muaj kev ntxhov siab me me. Kho cov txheej txheem dhau los kom tiv thaiv kev puas tsuaj ntawm qhov hloov pauv thaum muaj ntau dhau.
2. Vim tias lub hauv paus kev sib koom ua ke yog tsim ntawm txheej txheej ntawm kab hluav taws xob ntawm lub nplhaib sib xyaw axially ntawm ob qho kawg, qhov zoo tshaj plaws txuas tus khub coefficient k33 tuaj yeem siv.
3. Muaj cov kev xaiv xaiv rau cov xov tooj ntawm cov nplhaib thiab cov qauv sib txuas, yog li ntawd tus hloov pauv tuaj yeem tsim nrog qhov dav dua thiab ntau zaus.
4. Hloov cov khoom loj ntawm lub taub hau thiab taub hau hlau npog tuaj yeem tswj cov bandwidth ntawm lub transducer, pem hauv ntej-nraub qaum kev co ceev nrawm thiab cov ua haujlwm zoo electromechanical txuas.
